fleabane

• 指多种植物的名称，尤指飞蓬属（Erigeron）及近缘属植物，历史上被认为能驱除跳蚤；通常开类似雏菊的花。

A noun referring to any of several plants, especially of the genus Erigeron or related genera, historically believed to repel fleas, typically having daisy-like flowers.

1. C2formalscientific

   A hairy perennial Eurasian herb with yellow daisylike flowers, historically believed to repel or destroy fleas.

   飞蓬

   • The gardener planted fleabane near the kennel to deter fleas.
   • In medieval times, fleabane was hung in homes to ward off insects.
   • This Eurasian herb, known as fleabane, has bright yellow flowers.

2. North American plant (Erigeron)C2formalamericanscientific

   Any of several North American plants of the genus Erigeron, having daisylike flowers, formerly believed to repel fleas.

   飞蓬

   • The meadow was covered with wild Erigeron, commonly called fleabane.
   • Fleabane is often found in open fields across North America.
   • The delicate daisylike flowers of fleabane attract many pollinators.

3. C2formalamericanscientific

   A common North American weed with linear leaves and small discoid heads of yellowish flowers, widely naturalized in temperate regions.

   飞蓬

   • This fleabane species has become naturalized in many temperate areas.
   • The weed, with its small yellow flower heads, is often seen along roadsides.
   • Botanists classify this common fleabane under the genus Erigeron.

   同义词horseweed